pseudoparkinsonism
Pronunciation: SOO-doh-PAR-kin-son-izm
Parkinsonian symptoms caused by medications rather than neurodegenerative disease, particularly antipsychotics blocking dopamine receptors.
Full Definition
Pseudoparkinsonism refers to the development of parkinsonian symptoms—including tremor, rigidity, bradykinesia, and postural instability—as a result of medication-induced dopamine receptor blockade rather than the progressive neurodegeneration seen in true Parkinson's disease. This condition most commonly occurs with antipsychotic medications but can also result from other dopamine-blocking agents such as metoclopramide or prochlorperazine. The term emphasizes that these symptoms mimic Parkinson's disease but have a different underlying mechanism. Recognition is crucial because the condition is typically reversible with medication adjustment, unlike degenerative parkinsonism. The onset is usually subacute, occurring within weeks to months of drug initiation or dose escalation.
Usage
Usage note: Often written with or without hyphen in 'pseudo-parkinsonism'; ensure consistency within documents.
In Context
- "The elderly patient's pseudoparkinsonism resolved completely after discontinuing metoclopramide." — Case study report
- "Clinicians must differentiate pseudoparkinsonism from underlying neurodegenerative conditions." — Medical review article